I shot one of the rods on my Chrono. The Chrono looks more or less OK on the outside, but there is a loose piece rattling around on the inside. Before I order new guide wires and diffuser covers, I want to check the damage inside. Does anyone know how to open the unit? It seems to be glued. Since I live in Germany, shipping to Competition Electronics is not really an option, I guess I can buy a new unit for the shipping cost plus repair.